2(u-3)=5u-21

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Solution for 2(u-3)=5u-21 equation:


Simplifying
2(u + -3) = 5u + -21

Reorder the terms:
2(-3 + u) = 5u + -21
(-3 * 2 + u * 2) = 5u + -21
(-6 + 2u) = 5u + -21

Reorder the terms:
-6 + 2u = -21 + 5u

Solving
-6 + 2u = -21 + 5u

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '-5u' to each side of the equation.
-6 + 2u + -5u = -21 + 5u + -5u

Combine like terms: 2u + -5u = -3u
-6 + -3u = -21 + 5u + -5u

Combine like terms: 5u + -5u = 0
-6 + -3u = -21 + 0
-6 + -3u = -21

Add '6' to each side of the equation.
-6 + 6 + -3u = -21 + 6

Combine like terms: -6 + 6 = 0
0 + -3u = -21 + 6
-3u = -21 + 6

Combine like terms: -21 + 6 = -15
-3u = -15

Divide each side by '-3'.
u = 5

Simplifying
u = 5

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